Label printer ribbon supply cartridge



FIG. 1 is a front perspective view of a label printer ribbon supply cartridge showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in all figures are for illustrative environmental purposes only and form no part of the claimed design. The broken lines which define the bounds of the claimed design form no part thereof. 

An ornamental design for a label printer ribbon supply cartridge, as shown and described. 